Home / 13,674.64-18,868.80-7,704.94

Finding the Fourth Proportional to 13,674.64, 18,868.80 and 7,704.94

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Solution

The fourth proportional to 13,674.64, 18,868.80 and 7,704.94 is: 10,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.64 : 18,868.80 = 7,704.94 : x
  2. Step 2: Convert to fraction form
    13,674.64/18,868.80 = 7,704.94/x
  3. Step 3: Cross multiply
    13,674.64x = 18,868.80 × 7,704.94
  4. Step 4: Simplify right side
    13,674.64x = 145,382,971.87
  5. Step 5: Solve for x
    x = 145,382,971.87/13,674.64
  6. Step 6: Final answer
    x = 10,631.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.